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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F14%3A00432281%21RIV15-AV0-68378271
rdf:type
n8:Vysledek skos:Concept
dcterms:description
Fumed silica A-300 was carbonized by means of pyrolysis of CH2Cl2. The obtained initial SiO2:C nanopowders of black color, with an average diameter of 14–16 nm and carbon (C) concentration 7 wt. %, subjected to the oxidation and passivation treatment were studied by electron paramagnetic resonance (EPR) in the temperature range 4–400 K. Two EPR signals of Lorentzian lineshape with nearly equal g-factors and different linewidth were observed in the initial, oxidized, and passivated SiO2:C nanopowders. The two-component EPR spectrum was explained by the presence of C in two electronic states. The intensive narrow EPR signal, which has a temperature-dependent intensity, linewidth, and resonance field position, was attributed to the carbon-related defect with non-localized electron hopping between neighboring C-dangling bonds Fumed silica A-300 was carbonized by means of pyrolysis of CH2Cl2. The obtained initial SiO2:C nanopowders of black color, with an average diameter of 14–16 nm and carbon (C) concentration 7 wt. %, subjected to the oxidation and passivation treatment were studied by electron paramagnetic resonance (EPR) in the temperature range 4–400 K. Two EPR signals of Lorentzian lineshape with nearly equal g-factors and different linewidth were observed in the initial, oxidized, and passivated SiO2:C nanopowders. The two-component EPR spectrum was explained by the presence of C in two electronic states. The intensive narrow EPR signal, which has a temperature-dependent intensity, linewidth, and resonance field position, was attributed to the carbon-related defect with non-localized electron hopping between neighboring C-dangling bonds
dcterms:title
Electron paramagnetic resonance study of paramagnetic centers in carbon-fumed silica adsorbent Electron paramagnetic resonance study of paramagnetic centers in carbon-fumed silica adsorbent
skos:prefLabel
Electron paramagnetic resonance study of paramagnetic centers in carbon-fumed silica adsorbent Electron paramagnetic resonance study of paramagnetic centers in carbon-fumed silica adsorbent
skos:notation
RIV/68378271:_____/14:00432281!RIV15-AV0-68378271
n3:aktivita
n5:I n5:P
n3:aktivity
I, P(LM2011029)
n3:cisloPeriodika
13
n3:dodaniDat
n9:2015
n3:domaciTvurceVysledku
n17:2125587
n3:druhVysledku
n18:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
14175
n3:idVysledku
RIV/68378271:_____/14:00432281
n3:jazykVysledku
n15:eng
n3:klicovaSlova
EPR; carbosil; confinement effect; carbon-related defect
n3:klicoveSlovo
n7:carbon-related%20defect n7:carbosil n7:EPR n7:confinement%20effect
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[46D1DC18B1DD]
n3:nazevZdroje
Journal of Applied Physics
n3:obor
n4:BM
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
6
n3:projekt
n13:LM2011029
n3:rokUplatneniVysledku
n9:2014
n3:svazekPeriodika
115
n3:tvurceVysledku
Tertykh, V. A. Lysenko, V. S. Shanina, B. D. Savchenko, Dariia Kalabukhova, E. N. Sitnikov, A. A.
n3:wos
000334578200019
s:issn
0021-8979
s:numberOfPages
7
n16:doi
10.1063/1.4870578